Revenue rose gradually from KRW 19.59 trillion in 2022 to KRW 20.61 trillion in 2023, KRW 21.20 trillion in 2024 and KRW 21.90 trillion in 2025, but profits moved the other way.
Operating profit fell for three straight years, from KRW 1.27 trillion in 2022 (6.5% margin) to KRW 830.8 billion in 2023 (4.0%), KRW 706.0 billion in 2024 (3.3%) and KRW 665.0 billion in 2025 (3.0%), while net profit attributable to owners slid from KRW 565.2 billion in 2023 to KRW 449.3 billion in 2024 and KRW 341.3 billion in 2025.
In short, the top line grew while unit margins were shaved, a pattern that persisted through 2025.
Quarterly data show both seasonality and recovery: in the second quarter of 2025, revenue of KRW 3.93 trillion produced only KRW 11.4 billion of operating profit and a KRW 8.7 billion net loss to owners, whereas peak-season fourth-quarter 2025 revenue of KRW 7.61 trillion delivered KRW 324.8 billion of operating profit.
Into 2026, first-quarter revenue was KRW 5.53 trillion with KRW 295.3 billion operating profit (about 5.3% margin) and second-quarter revenue KRW 5.53 trillion with KRW 245.8 billion (about 4.4%), keeping margins above 4% even in the off season.
Cumulative first-half revenue of KRW 11.06 trillion was the company's first half-year above KRW 10 trillion, and half-year operating profit of KRW 541.0 billion approached the full-year 2025 figure.
By unit in the second quarter of 2026, optics revenue was KRW 4.52 trillion (up 48% year on year), package solution KRW 498.4 billion (up 20%) and mobility KRW 510.9 billion (up 10%).
Cash flow and the balance sheet also improved in direction: operating cash flow rose from KRW 1.11 trillion in 2024 to KRW 1.33 trillion in 2025, the debt-to-equity ratio fell from 137.7% in 2023 to 112.5% in 2024 and 107.0% in 2025, and the company said the ratio stood at 87.2% at end-June 2026 with borrowings down to KRW 2.16 trillion.
Two caveats belong in any reading: the second-quarter 2026 figures were disclosed as preliminary numbers not yet reviewed by an external auditor, and much of the profit is tied to one customer's new product cycle.